Classifications

• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
  • C07C327/00—Thiocarboxylic acids
  • C07C327/58—Derivatives of thiocarboxylic acids, the doubly-bound oxygen atoms being replaced by nitrogen atoms, e.g. imino-thio ethers
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D417/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00
  • C07D417/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing two hetero rings
  • C07D417/04—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing two hetero rings directly linked by a ring-member-to-ring-member bond
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D285/00—Heterocyclic compounds containing rings having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by groups C07D275/00 - C07D283/00
  • C07D285/01—Five-membered rings
  • C07D285/02—Thiadiazoles; Hydrogenated thiadiazoles
  • C07D285/04—Thiadiazoles; Hydrogenated thiadiazoles not condensed with other rings
  • C07D285/06—1,2,3-Thiadiazoles; Hydrogenated 1,2,3-thiadiazoles
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D309/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings
  • C07D309/02—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings having no double bonds between ring members or between ring members and non-ring members
  • C07D309/04—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings having no double bonds between ring members or between ring members and non-ring members with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to ring carbon atoms
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D333/00—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom
  • C07D333/02—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings
  • C07D333/04—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom
  • C07D333/06—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to the ring carbon atoms
  • C07D333/24—Radicals substituted by carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals

Definitions

• This invention is concerned with 1,2,3-thiadiazole-4-thiolate intermediates which are useful in the preparation of cephalosporanic acid derivatives having antibacterial activity. Further, this invention is concerned with certain intermediates used to prepare such 1,2,3-thiadiazole-4-thiolates as well as processes for their preparation.
• N-acylthiohydrazonate esters are used to make either alkyl 3-(1,2,3-thiadiazol-4-ylthio)-propionates of the formula: where R 1 is as described above and R 4 is alkyl(C 1 -C) or 4-(substituted thio)-1,2,3-thiadiazoles of the formula: where R 1 is as described above and R 5 is selected from the group consisting of alkyl(C 1 -C 3 ); phenyl; alkenyl(C 3 -C 6 ); -CH 2 COOC 2 H 5 ; -C(CH 3 ) 2 COOC 2 H 5 and -CH 2 CH 2 CN.
• a substituted methyl ketone 4 where R 1 is 4-t-butylphenyl, 4-methoxyphenyl, 3,4,5-trimethoxyphenyl, naphthyl, thienyl or 3-methoxyphenyl is heated with piperidine and sulfur giving the piperidine derivative 5 which is then reacted with bromoacetic acid in an organic solvent giving the piperidinium bromide derivative 6 which is reacted with hydrogen sulfide in an alkanol, at 0-35°C, giving the acetic acid derivative 7, or alkyl esters thereof, which is then reacted with an alkyl hydrazine carboxylate 2, where R 2 is methoxy or ethoxy in a solvent such as dichloromethane, at reflux giving the N 2- thloacylcar- bazates 3 which are purified by chromatography.
• an acetic acid derivative 8 where R 1 is 4-chlorophenyl, 4-fluorophenyl, 3-(trifluoromethyl)phenyl, C 2 H 5 OOC-, phenylthio or 2-tetrahydropyranyl, is reacted with thionyl chloride in a solvent such as benzene at reflux giving the acyl chloride derivative 9 which is then reacted with piperidine in pyridine and ether giving the piperidine derivative 10 which is reacted with phosphorus pentasulfide in pyridine at reflux giving piperidine derivative 5 followed by reaction as described in Scheme II to produce 3.
• reaction of 16 with phosphorus pentachloride in chloroform followed by reaction with sodium (or potassium) ethyl (or methyl)-propionate-3-thiolate in tetrahydrofuran, giving derivative 13 which is then reacted with thionyl chloride in methylene chloride at reflux giving 1,2,3-thiadiazoles 14.
• This oil was taken up in dichloromethane, applied to a 60mm x 600mm, 60 g column of silica gel (200-400 mesh) packed in dichloromethane and eluted with a gradient of 0-10% methanol in dichloromethane. The desired fractions were collected, giving 93.0 g of a light yellow oil. This oil was crystallized from methylcyclohexane, giving 91.0 g (81% yield) of the desired compound as ivory crystals, mp 72.5-73°C.
• Proton nuclear magnetic resonance (6[ppm], CDCl 3 ) 90MHz: 1.07 (s, 9H, t-butyl); 2.63 (s, 2H, CH 3 CS); 3.80 (s, 3H, OCH 3 ); 8.75 (bs, 1 H, NH); 9.65 (bs, 1 H, NH).
• Proton nuclear magnetic resonance (6[ppm], CDCl 3 ) 90MHz: 2.38 (s, CH 3 ); 3.79 (s, 3H, OCH 3 ); 4.07 (s, 2H, CH 2 CS); 7.23 (s, 4H, C 6 H 4 ); 8.68 (bs, 1H, NH); 9.52 (bs, 1H, NH).
• Example 6 A mixture of 200 g of 4-methoxyacetophenone, 214.5 g of piperidine and 64.5 g of powdered sulfur was reacted as described in Example 6. The product was further reacted with bromoacetic acid and hydrogen sulfide as described in Example 6, giving ethyl 2-[2-(4-methoxyphenyl)-1-thioxoethyl]thioglycolate as an orange oil.
• Example 6 The procedure of Example 6 was repeated using 3,4,5-trimethoxyacetophenone, giving 2-[1-thioxo-2-(3,4,5-trimethoxyphenyl)ethyl]thioglycolic acid.
• Proton nuclear magnetic resonance ( ⁇ [ppm ], CDCl 3 ) 90MHz: 3.75 (s, 3H, OCH 3 ); 4.27 (a, 2H, CH 2 CS); 7.30-8.00 (m, 7H, d o Hy); 8.55 (bs, 1H, NH); 9.50 (bs, 1H, NH).
• Proton nuclear magnetic resonance (6[ppm], CDCI 3 ) 90MHz: 3.77 (s, 3H, OCH 3 ); 3.85 (s, 3H, OCH 3 ); 3.87 [s, 6H, OCH 3 -(2X)]; 4.04 (s, 2H, CH 2 CS); 6.52 (s, 2H, C6H2); 8.51 (bs, 1 H, NH); 9.15 (bs, 1 H, NH).
• Proton nuclear magnetic resonance (6[ppm], CDCI 3 ) 90MHz: 1.30 (t, 3H, CH 3 CH 2 0); 3.87 (s, 3H, OCH 3 ); 3.91 (s, 3H, CH 2 CS); 4.27 (q, 2H, OCH 2 CH 3 ); 8.85 (bs, 1H, NH); 11.52 (bs, 1H, NH).
• Proton nuclear magnetic resonance (6[ppm], CDCI 3 ) 90MHz: 3.79 (s, 3H, OCH 3 ); 4.18 (s, 2H, SCH 2 CS); 7.32 (bs, 5H, C 6 Hs); 8.55 (bs, 1 H, NH); 10.55 (bs, 1 H, NH).
• Proton nuclear magnetic resonance (6[ppm], CDCI 3 ) 300MHz: 1.35-1.85 [m, 6H, (CH 2 ) 3 CH 2 0]; 2.92 (m, 2H, CHCH 2 CS); 3.55 (m, 2H, CH 2 0); 3.79 (s, 3H, OCH 3 ); 4.10 (m, 1H, CHCH 2 ); 8.72 (bs, 1H, NH); 10.98 (bs, 1 H, NH).
• Phenylthiopropionylpiperidine was converted to [(3-phenyl-1-thioxopropyl)thiolacetic acid, ethyl ester by the general procedure of Example 16, using ethyl bromoacetate.
• Proton nuclear magnetic resonance (6[ppm], CDCI 3 ) 90MHz: 2.95 (m, 2H, CH 2 ); 3.12 (m, 2H, CH 2 ); 4.79 (bs, 2H, NH 2 ); 7.28 (bs, 5H, C 6 H 5 ); 8.83 (bs, 1H, NH); 9.75 (bs, 1 H, NH).
• Proton nuclear magnetic resonance (6[ppm], CDCl 3 ) 90MHz: 0.95 (t, 3H, CH 3 ); 1.80 (m, 2H, CH 2 CH 3 ); 2.64 (t, 2H, CH 2 CS); 5.85 (bs, 2H, NH 2 ); 9.27 (bs, 1H, NH); 11.27 (bs, 1H, NH).
• Infrared spectrum (neat): 3120(m); 1740(s); 1260-1125(s); 948-885.
• Infrared absorption spectrum (neat): 1735(s); 1460(w); 1415(w); 1370(m); 1342(w); 1285(w); 1245(w); 1220(w); 1170(m); 1140(m); 1045(m); 1025(m); 1010(m); 890(m).
• Infrared absorption spectrum (neat): 1735(s); 1460(m); 1430(m); 1400(m); 1355(m); 1245(m); 1210(m); 1170(m); 1150(m); 925(m).
• Infrared absorption spectrum (neat): 1740(s); 1610(m); 1522(m); 1375(m); 1270(m); 1250(m); 1220(m); 1200(m); 1180(m); 935(s); 840(s).
• This oil was purified on a dry silica gel column, eluting with heptane:ethyl acetate (1:1). The desired fraction was collected, dissolved in dichloromethane, passed through an alumina pad and evaporated, giving [E(and Z)]-2-[1-[(3- ethoxy-3-oxopropyl)thio]-2-(2-naphthyl)ethylidene]hydrazinecarboxylic acid, methyl ester.
• Infrared absorption spectrum (neat): 1725(s); 1590(m); 1575(m); 1495(m); 1458(m); 1450(m); 1420(m); 1370(m); 1345(m); 1295(m); 1280-(m); 1245(m); 1185(m); 1160(m); 1051(m); 1006(m); 936(m); 860(m); 780(m).
• Proton nuclear magnetic resonance (8 - [ppm], CDCIa) 90MHz: 1.38 (t, 3H, J 7.0Hz, CH 3 ); 3.17 (q, 2H, SCH 3 ); 8.25 (s, 1 H, H-5).
• This silica gel was applied to a column of silica gel packed in petroleum ether and eluted with a gradient of 0-50% ethyl acetate in petroleum ether. The desired fractions were collected giving an oil which was crystallized from isopropyl ether, giving 40 g of (Z)-[2-phenyl-I-phenylthio)ethylidene]hydrazinecarboxylic acid, methyl ester as yellow needles, mp 67.5-70°C.
• Infrared absorption spectrum (neat): 1610(w); 1520(w); 1475(w); 1460(w); 1445(w); 1405(w); 1365(w); 1270(s); 1175(s); 936(s); 820(s).
• Proton nuclear magnetic resonance (s[ppm], CD 3 0D) 90MHz: 2.35 (s, 3H, CH 3 ); [7.24 (d, 2H, J 8.5Hz) and 8.05 (d, 2H)(C 6 H 4 )].

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• Organic Chemistry (AREA)
• Chemical & Material Sciences (AREA)
• Nitrogen- Or Sulfur-Containing Heterocyclic Ring Compounds With Rings Of Six Or More Members (AREA)
• Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
• Plural Heterocyclic Compounds (AREA)
• Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
• Cephalosporin Compounds (AREA)
• Hydrogenated Pyridines (AREA)
• Lubricants (AREA)
• Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
• Pyrrole Compounds (AREA)
• Saccharide Compounds (AREA)
• Catalysts (AREA)

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• 1986
  • 1986-07-08 US US06/883,189 patent/US4803280A/en not_active Expired - Fee Related
• 1987
  • 1987-07-06 EP EP87109703A patent/EP0252474B1/fr not_active Expired - Lifetime
  • 1987-07-06 ES ES87109703T patent/ES2053474T3/es not_active Expired - Lifetime
  • 1987-07-06 EP EP92117416A patent/EP0525832A1/fr not_active Ceased
  • 1987-07-06 AT AT87109703T patent/ATE88464T1/de not_active IP Right Cessation
  • 1987-07-06 DE DE87109703T patent/DE3785498T2/de not_active Expired - Fee Related
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  • 1987-07-07 PT PT85275A patent/PT85275B/pt not_active IP Right Cessation
  • 1987-07-07 DK DK349787A patent/DK349787A/da not_active Application Discontinuation
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  • 1987-07-08 KR KR1019870007353A patent/KR950004049B1/ko active IP Right Grant
  • 1987-07-08 JP JP62170844A patent/JPH0774192B2/ja not_active Expired - Lifetime
  • 1987-07-08 CA CA000541592A patent/CA1326488C/fr not_active Expired - Fee Related
• 1988
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• 1993
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• 1995
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